WO2010108785A1 - Procédé de synthèse de 1,3-bis(aminoalkyl)disiloxanes - Google Patents

Procédé de synthèse de 1,3-bis(aminoalkyl)disiloxanes Download PDF

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Publication number
WO2010108785A1
WO2010108785A1 PCT/EP2010/053099 EP2010053099W WO2010108785A1 WO 2010108785 A1 WO2010108785 A1 WO 2010108785A1 EP 2010053099 W EP2010053099 W EP 2010053099W WO 2010108785 A1 WO2010108785 A1 WO 2010108785A1
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Prior art keywords
general formula
bis
disiloxanes
water
groups
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PCT/EP2010/053099
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German (de)
English (en)
Inventor
Elke Fritz-Langhals
Jürgen STOHRER
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Wacker Chemie Ag
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Priority to CN2010800137004A priority Critical patent/CN102361879A/zh
Priority to US13/256,740 priority patent/US20120004436A1/en
Priority to JP2012501232A priority patent/JP5420751B2/ja
Priority to EP10707915A priority patent/EP2411400B1/fr
Publication of WO2010108785A1 publication Critical patent/WO2010108785A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02—Silicon compounds
    • C07F7/08—Compounds having one or more C—Si linkages
    • C07F7/0834—Compounds having one or more O-Si linkage
    • C07F7/0838—Compounds with one or more Si-O-Si sequences
    • C07F7/0872—Preparation and treatment thereof
    • C07F7/0889—Reactions not involving the Si atom of the Si-O-Si sequence
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02—Silicon compounds
    • C07F7/08—Compounds having one or more C—Si linkages
    • C07F7/10—Compounds having one or more C—Si linkages containing nitrogen having a Si-N linkage
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02—Silicon compounds
    • C07F7/08—Compounds having one or more C—Si linkages

Definitions

  • the invention relates to the preparation of bis ⁇ aminoalkyl) disiloxanes from the corresponding carbamates by heating with water.
  • ⁇ , ⁇ -dihydroxypolys ⁇ loxanes or with cyclic siloxanes with ring opening ⁇ , ⁇ -aminoalkylpolysiloxanes can be prepared in a simple manner. These find e.g. Application in the synthesis of polyamides, polyurethanes and polyimides.
  • ⁇ , ⁇ ⁇ Aminoalkylpolysiloxanes are also used for increasing the hydrophobicity and softness of textiles.
  • Bis (aminopropyl) tetramethyldisiloxane by hydrolysis of the so-called azacycle, which in turn is prepared by reacting 3-chloropropyldimethylchlorosilane with ammonia under high pressure.
  • Critical in this method is the required high excess of ammonia under high pressure, otherwise secondary and tertiary amino groups or quaternary ammonium salts may be formed. These conditions make the synthesis of bis (aminopropyl) tetramethyldisiloxane considerably more expensive.
  • EP 342518 is another access route for Bis (aminopropyl) tetramethyldisiloxane described, namely the hydrosilylation of allylamine in the presence of special platinum catalysts at temp. Above 100 0 C, which is technically difficult to realize because of the low boiling point, high volatility and low flash point of allylamine.
  • allylamine Another problem with the use of allylamine is its high toxicity, which also precludes its use on an industrial scale.
  • Other noble metal-catalyzed hydrosilylation reactions were carried out on N, N-bis (trialkylsilyl) allylamines (US 6087520), N-trialkylsilylamines ⁇ Speier, J, Org. Chem. 1959, 24, 119) or allylimines (JP63275591).
  • the required M-protection before the hydrosilylation and the elimination of the N-protecting groups after the reaction makes these processes cumbersome and expensive.
  • siloxane-containing amines have been prepared by thermal decomposition from carbamates without the action of water.
  • Arimitsu et al., J. Photopolymer Sci. and Technol. 2005, 18, 227; 2002, 15, 41 describe the thermolysis of thert ⁇ olabile carbamatodisiloxanes with Nitropentanyl- and Fluorenylresten to form aminoalkyldisiloxanes.
  • Solid material having special characteristics, such as high thermal stability and insolubility.
  • the conversion takes place exclusively in the cavities of this solid and not in solution.
  • the invention relates to a process for the synthesis of bis (aminoalkyl) disiloxanes of the general formula I.
  • R 1 is a divalent hydrocarbon radical having 1 to 100 carbon atoms, wherein the carbon chain interrupted by non-adjacent oxygens, sulfur atoms, -NR 6 - (CO) - or - NHCONH groups and the hydrogens of the bivalent hydrocarbon radical individually by F, Cl,
  • NR 7 R 8 or OR 9 groups may be substituted, and R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 and R 9 are hydrocarbon radicals having 1 to 100 carbon atoms.
  • the process is inexpensive, easy to carry out and at the same time highly selective to the bis (aminoalkyl) disiloxanes of the general formula (I).
  • R 1 - may in particular be a divalent linear or branched alkyl, cycloalkyl, alkenyl, aryl or aralkyl radical.
  • R 1 is preferably a linear divalent alkyl radical having 1-20 C atoms.
  • R 1 is particularly preferably a methylene, ethylene, propylene, butylene, pentylene or hexylene radical.
  • R 2 , R 3 , R 4 , R 5 , R 6 / R 7 , R 8 and R 9 may in particular be linear or branched alkyl, cycloalkyl, aryl- > alkenyl or Arylalkyl be.
  • the radicals R 1 , R 3 , R 1 , R 5 , R 6 , R 7 , R 8 and R 9 preferably have 1-20, in particular 1 to 6, C atoms,
  • radicals R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 and R 9 are alkyl radicals such as the methyl, ethyl, n-propyl, iso-propyl, n-butyl iso-butyl, n-pentyl, iso-pentyl or neo-pentyl, hexyl, such as the n-hexyl, heptyl, such as the n-heptyl, octyl, such as the n-octyl, iso-octyl, nonyl, such as the n-nonyl radical, decyl radicals such as the n-decyl radical; Alkenyl radicals such as the vinyl and allyl radicals; Cycloalkyl radicals such as cyclopentyl, cyclohexyl and the
  • Cycloheptyl radical Aryl radicals such as the phenyl radical, naphthyl radical, or o ⁇ , m- and p ⁇ tolyl radicals.
  • radicals R 4 and R ⁇ are the methyl and the ethyl radical.
  • the process for the synthesis of bis (aminoalkyl) disiloxanes of the general formula I is preferably carried out at temperatures of at least 3O 0 C, more preferably at least 70 0 C, especially at least 90 0 C and preferably at most 300 0 C, particularly preferably at most 25O 0 C, in particular at most 200 0 C.
  • Bis (aminoalkyl) disiloxanes of the general formula I is preferably at least 0.5 hours, in particular at least 1 hour and preferably at most 30 hours, in particular at most 15 hours.
  • the pressure in the preparation of the bis (aminoalkyl) disiloxanes of the general formula I is preferably at least 0.05 bar, in particular at least 0.1 bar and preferably at most 200 bar, particularly preferably at most 100 bar, in particular at most 50 bar.
  • the process is preferably carried out in the presence of at least 10 mol%, particularly preferably at least 50 mol%, in particular at least 100 mol% of water and preferably at most 5000 mol%, in particular at most 1500 mol% of water, in each case based on the sum of the carbamato groups and methoxy groups in the carbamatosilanes of the general formula IIIa or the carbamato groups in the carbamatodisiloxanes of the general formula IHb.
  • the reaction can take place in any desired solvents and solvent mixtures, preferably in proportions of at least 1% by weight, in particular at least 10% by weight and preferably at most 99% by weight, in particular at most 90% by weight, based in each case on the weight of the entire reaction mixture.
  • organic solvents which mix with water at at least 1:10 or 10: 1 at the reaction temperature.
  • Monohydric or polyhydric alcohols or mixtures of different monohydric or polyhydric alcohols are preferably used as solvents. Preference is given to using primary or secondary monohydric or polyhydric alcohols. Typical examples of the added alcohols are methanol, ethanol, propanol, butanol, ethylene glycol, propylene glycol, ethylene glycol monomethyl ether, ethylene glycol diethyl ether, glycerol or diethylene glycol.
  • the reaction preferably takes place with the addition of catalysts preferably in proportions of at least 0.1 mol%, in particular at least 10 mol% and preferably at most 500 mol%, in particular at most 300 mol%, in each case based on the carbamatosilane of the general formula IIIa or the carbamatodisiloxane used of general formula IIIb.
  • Preferred catalysts are acids or bases.
  • Preferred acids are mineral acids, for example
  • Hydrohalic acids such as e.g. Hydrochloric acid, sulfuric acid or phosphoric acid, or acids containing organic radicals, in particular organic sulfonic acids, such as, for example, methanesulfonic acid or p-toluenesulfonic acid.
  • Preferred bases are inorganic metal hydroxides, in particular alkali and alkaline earth metal hydroxides, particularly preferred bases are sodium hydroxide and potassium hydroxide.
  • reaction to compounds of general formulas Ia and Ib may also take place in the absence of water, optionally with the addition of an acidic catalyst, more preferably with the addition of an acid in proportions of preferred at least 0.01 mol%, in particular at least 0.1 mol% and preferably at most 20 mol%, in particular at most 10 mol%, in each case based on the carbamatosilane of the general formula IIIa or the carbamatodisiloxane of the general formula IIIb.
  • the carbamatosilane of the general formula IIIa or the carbamatodisiloxane of the general formula IIIb or mixtures thereof used are preferably prepared by reacting the silanes of the general formulas IIa or of the siloxanes of the general formulas IIb or mixtures thereof
  • X is a chlorine atom.
  • M is preferably K or Na.
  • the cyanate salt of the formula M (OCN) 1n is preferably used in proportions of at least 1 equivalent, in particular at least 1.1 equivalents and preferably at most 5 equivalents, in particular at most 3 equivalents, in each case based on the group X.
  • the alcohol R 1 OH is preferably used in proportions of at least 1 equivalent, in particular at least 1.1 equivalents and preferably at most 10 equivalents, in particular at most 4 equivalents, in each case based on the group X.
  • carbamatosilane of the general formula IIIa or carbamatodisiloxane of the general formula IIIb is optionally carried out in the presence of a catalyst.
  • a catalyst optionally alkali metal iodides or bromides, preferably KI or NaI, or quaternary ammonium or phosphonium salts, but for example but not exclusively Methyltriphenylphosphoniumbromid, methyl-tri-N- butylammonium bromide or Methyltrioctylammoniumbromid used.
  • the proportion of catalysts is preferably at least 0.01 mol%, in particular at least 0.1 mol% and preferably at most 10 mol%, in particular at most 5 mol%, in each case based on the compounds IIa or IIb used.
  • the polar solvents used are preferably dipolar aprotic solvents such as
  • Sulfoxides for example DMSO, amides, e.g. Formamide, N, N-diraethylformamide, N, N-dimethylacetamide or N-methylpyrrolidone, ketones, e.g. Acetone or methyl ethyl ketone, nitriles, such as. B, acetonitrile, propionitrile or benzonitrile, or esters, e.g. Ethyl acetate.
  • amides e.g. Formamide, N, N-diraethylformamide, N, N-dimethylacetamide or N-methylpyrrolidone
  • ketones e.g. Acetone or methyl ethyl ketone
  • nitriles such as. B, acetonitrile, propionitrile or benzonitrile, or esters, e.g. Ethyl acetate.
  • the preparation of the compounds of the general formulas IIIa or IIIb is preferably carried out at temperatures of at least 8O 0 C, more preferably at least 10O 0 C, especially at least 12O 0 C and preferably at most 200 0 C, particularly preferably at most 160 0 C, particularly at most 150 0 C.
  • the reaction time in the preparation of the compounds of the general formulas HAa or IHb is preferably at least 0.5 hours, in particular at least 1 hour and preferably at most 30 hours, in particular at most 10 hours.
  • the reaction can be carried out by mixing the components in any order and heating, preferably with stirring.
  • the components can also be mixed at elevated temperature or directly at the reaction temperature.
  • all components except for the compounds of the general formulas IIa and IIb can be initially charged and then added at the reaction temperature.
  • the workup can be carried out in the usual manner known to the person skilled in the art.
  • the solvent is removed by distillation and the residue containing the product and salts is further reacted directly.
  • the carbamatosilane of the general formula IIIa can be converted into the carbamatodisiloxane of the general formula IIIb before the workup by the addition of water. This is advantageous in the use of solvents which have a very high boiling point and which are therefore difficult to separate from the carbamatosilane of the general formula IIIa (which is lower than the disiloxane).
  • the carbamates of the general formulas IIIa and IIIb can be used in isolated form, but also as crude products from the preceding synthesis stage, the carbamate synthesis.
  • the salts obtained during the reaction need not be separated off for the preparation of bis (aminoalkyl) disiloxanes of the general formula I, as described, for example, in US Pat. No. 3,494,951.
  • the compounds of the general formulas IIIa or IVb or mixtures thereof are reacted by reacting the silanes of the general formulas IIa or the siloxanes of the general formulas IIb or mixtures thereof as described above, and in a second step the reaction product offset preparing the synthesis of bis (aminoalkyl) disiloxanes of the general formula I with water and preferably heated to at least 3O 0 C.
  • the solvent is separated by distillation and the carbamate-containing solid is further reacted directly in the second step.
  • haloalkylalkoxysilanes of general formula IIa or the bis (haloalkyl) disiloxanes of general formula IIb can be prepared very easily and without problems from haloalkylhalosilanes by the action of alcohols or water. Since this also succeeds on an industrial scale, the compounds IIa and IIb are very suitable starting materials for the compounds of the general formula I. Another advantage is that in compounds of the general formulas IIIa or IIIb only via an alkyl group bonded halogen atoms and not In addition, the highly reactive Si-halogen groups, this counteracts the formation of by-products.
  • Example 2 4.00 g (11.0 mmol) of bis (methylcarbamatopropyl) tetramethyldisiloxane and 4.15 ml of 20% proc. aqueous hydrochloric acid are heated in an autoclave to 150 0 C, by draining the carbon dioxide formed, the pressure is limited to 5 bar. After 1 hr. Reaction time, the conversion to bis (aminopropyl) tetramethyldisiloxane is 75%.
  • Example 4 2.00 g (5.49 mmol) of bis (methylcarbamatopropyl) tetramethyldisiloxane, 10 ml of 5 M NaOH (25 mmol) and 5 ml of methanol are refluxed for 15 hours (complete conversion). Dilute the reaction mixture with water and extract with MTBE. Evaporation of the organic phase gives 0.95 g (70%) of bis (aminopropyl) tetramethyldisiloxane.
  • Bis (methylcarbamatopropyl) tetramethyldisiloxane are heated for 4 hours to 140 ° C. in an autoclave with 1.52 g (11.0 mmol) of potassium carbonate and 40 ml of water. The mixture is acidified, the organic phase is separated off, the aqueous phase is rendered alkaline, and it is extracted with dichloromethane and evaporated, yield 0.4 g of bis (aminopropyl) tetramethyldisiloxane.
  • a mixture of 20 ml of 1-methyl-2-pyrrolidone, 7.53 g (92.8 mmol) of potassium cyanate and 137 mg (0.83 mmol) of potassium iodide is heated under inert gas (argon) up to 145 ° C and at this temperature While stirring, a mixture of 13.6 g (81.6 mmol) of 3 Chloropropyldimethylmethoxysilane and 3.75 ml of methanol within 2 hrs. Dropwise, the temperature between 140 and 145 0 C is maintained. Stirring is continued at this temperature until complete conversion (about 4 hours) / allowed to cool, filtered and distilled in vacuo at 11 mbar, the solvent. The residue is with 13 g 20 percent.
  • Example 8 A mixture of 60 ml of 1-methyl-2-pyrrolidone, 15.1 g (18 ⁇ mmol) of potassium cyanate, 3.09 g (18.6 mmol) of potassium iodide, 22.6 g (98.8 percent, 77, 7 mmol) of bis (chloropropyl) disiloxane and 7 ml of methanol is heated with stirring under inert gas (argon) to 120 0 C and at this temperature within 5 hrs. Added another 11 ml of methanol. It is allowed to cool, filtered and distilled off in vacuo at 11 mbar, the solvent. The residue (24 g) is washed with 120 ml of 20 percent.
  • inert gas argon

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Silicon Polymers (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

L'invention a pour objet un procédé de synthèse de bis(aminoalkyl) disiloxanes, de formule générale I, procédé selon lequel le carbamatosilane, de formule générale IIIa ou le carbamatodisiloxane, de formule générale IIIb, ou leurs mélanges sont mis à réagir en présence d'eau, formules dans lesquelles R1 désigne un reste hydrocarboné divalent de 1 à 100 atomes de C, la chaîne carbonée étant interrompue par des oxygènes, des atomes de soufre, des groupes -NR6 - (CO) - ou – NHCONH non voisins, et les hydrogènes dudit reste hydrocarboné divalent, pouvant être substitués individuellement par F, Cl, NR7R8 ou des groupes OR9- et R2, R3, R4, R5, R6, R7, R8 et R9 désignant des restes hydrocarbonés de 1 à 100 atomes de C.
PCT/EP2010/053099 2009-03-23 2010-03-11 Procédé de synthèse de 1,3-bis(aminoalkyl)disiloxanes WO2010108785A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN2010800137004A CN102361879A (zh) 2009-03-23 2010-03-11 1，3-双(氨烷基)二硅氧烷的合成方法
US13/256,740 US20120004436A1 (en) 2009-03-23 2010-03-11 Process for the synthesis of 1,3-bis(aminoalkyl)disiloxanes
JP2012501232A JP5420751B2 (ja) 2009-03-23 2010-03-11 １，３−ビス（アミノアルキル）ジシロキサンの合成方法
EP10707915A EP2411400B1 (fr) 2009-03-23 2010-03-11 Procédé de synthèse de 1,3-bis(aminoalkyl)disiloxanes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009001758.5 2009-03-23
DE102009001758A DE102009001758A1 (de) 2009-03-23 2009-03-23 Verfahren zur Synthese von 1,3-Bis(aminoalkyl)disiloxanen

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WO2010108785A1 true WO2010108785A1 (fr) 2010-09-30

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US (1) US20120004436A1 (fr)
EP (1) EP2411400B1 (fr)
JP (1) JP5420751B2 (fr)
KR (1) KR20110120337A (fr)
CN (1) CN102361879A (fr)
DE (1) DE102009001758A1 (fr)
WO (1) WO2010108785A1 (fr)

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CN107286340B (zh) * 2017-07-27 2020-01-10 株洲时代新材料科技股份有限公司 一种共聚透明尼龙及其制备方法
CN113292591A (zh) * 2021-06-23 2021-08-24 唐山三孚新材料有限公司 1,3-双(异氰酸酯基烷基)-1,1,3,3-四甲基二硅氧烷的合成方法与应用

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US4631346A (en) 1985-03-04 1986-12-23 General Electric Company Silyl carbamates and their use in the preparation of bis (aminoalkyl) disiloxanes
JPS63275591A (ja) 1987-05-01 1988-11-14 Shin Etsu Chem Co Ltd ジアミノプロピルジシロキサンの製法
EP0342518A2 (fr) 1988-05-20 1989-11-23 General Electric Company Procédé et produits intermédiaires pour la préparation de bis(Aminoalkyl)Polydiorganosiloxanes
US6087520A (en) 1998-01-21 2000-07-11 Shin-Etsu Chemical Co., Ltd. Preparation of 1,3-bis(3-aminopropyl)tetramethyldisiloxane
DE10049183C1 (de) 2000-10-05 2002-01-17 Consortium Elektrochem Ind Cyclische Silazane

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JPS63275591A (ja) 1987-05-01 1988-11-14 Shin Etsu Chem Co Ltd ジアミノプロピルジシロキサンの製法
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US20120004436A1 (en) 2012-01-05
EP2411400B1 (fr) 2012-09-05
DE102009001758A1 (de) 2010-09-30
CN102361879A (zh) 2012-02-22
JP5420751B2 (ja) 2014-02-19
JP2012521381A (ja) 2012-09-13
KR20110120337A (ko) 2011-11-03
EP2411400A1 (fr) 2012-02-01

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